TECHNICAL INFORMATION Vibracon LVL-B1, LVL-B2

Transcription

1 PROCESS AUTOMATION TECHNICAL INFORMATION Vibracon LVL-B1, LVL-B2 Vibration Limit Switch Limit Switch for Bulk Solids ISO9001

2 With regard to the supply of products, the current issue of the following document is applicable: The General Terms of Delivery for Products and Services of the Electrical Industry, published by the Central Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.v.) in its most recent version as well as the supplementary clause: "Expanded reservation of proprietorship" Application The device is a robust level limit switch for silos with fine-grained or coarse-grained, non-fluidized bulk solids. The various designs means the device has a wide range of applications. Certificates are also available for use in dust incentive hazard areas. LVL-B1: compact design (250 mm) as vibrating rod for installation in any direction LVL-B2: vibrating rod with extension pipe (500 mm/1000 mm/1500 mm/20 inch/40 inch/60 inch) for installation in any direction Typical applications: cereals, coffee beans, sugar, animal feed, rice, detergents, dye powder, chalk, gypsum, cement, sand, plastic granules Your benefits No calibration: easy commissioning (plug and play) Insensitive to build-up: maintenance-free operation No mechanically moving parts: no wear, long operating life Sensor material 316L: hardly any abrasion even with building materials F16 plastic housing with cover with sight glass: switch status visible from outside F18 aluminium housing also available Insensitive to external vibration and flow noises Also available with explosion protection ATEX II 1/3 D, FM or CSA approval

3 Content 1 Function and System Design Measuring Principle Measuring System Cable Specifications Cable Entries Input Measured Variable Measuring Range Input Signal Measuring Frequency Output Galvanic Isolation Switch Behavior Power-on Behavior Fail-Safe Mode Switching Delay Ex Specifications Connection FEM22 (E5) Electronic Insert, DC PNP FEM24 (WA) Electronic Insert, AC/DC with Relay Output Operating Conditions Installation Instructions Environment Ambient Temperature Range Storage Temperature Climate Class Degree of Protection Vibration Resistance Electrical Safety Electromagnetic Compatibility

4 Content 8 Process Ambient Temperature Thermal Shock Resistance Limiting Medium Pressure Range State of Aggregation Grain Size Bulk Density Lateral Load Mechanical Construction Design, Dimensions Weight Material Human Interface Display Elements Operating Elements of Electronic Inserts Sediment Detection Certificates and Approvals CE Mark, Declaration of Conformity Ex Approval Type of Protection Other Standards and Guidelines Ordering Information Product Structure LVL-B Product Structure LVL-B Accessories Sliding Sleeves for Vibracon LVL-B Spare Parts Documentation

5 Function and System Design 1 Function and System Design 1.1 Measuring Principle A piezoelectric drive excites the vibrating rod of the device to its resonance frequency. If medium covers the vibrating rod, the rod's vibrating amplitude changes (the vibration is damped). Device's electronics compare the actual amplitude with a target value and indicates whether the vibrating rod is vibrating freely or whether it is covered by medium. A A t t Figure 1.1 A Amplitude 5

6 Function and System Design 1.2 Measuring System The device is a compact electronic switch. Thus, the entire measuring system only consists of: Device LVL-B1 or LVL-B2 with FEM22 (E5) or FEM24 (WA) electronic insert a supply point and the connected control systems, switching units, signalling systems (e. g. lamps, horns, PCS, PLC, etc.) EX EX + U U ~ Figure 1.2 6

7 Cable Specifications 2 Cable Specifications Use a shielded cable in the event of strong electromagnetic radiation. Immunity to temperature change of connecting cable The connecting cables must withstand the ambient temperature +15 K. 2.1 Cable Entries M20x1.5 (cable gland), NPT1/2, G1/2 7

8 Input 3 Input 3.1 Measured Variable Level (according to the mounting location and the overall length) 3.2 Measuring Range The measuring range depends on the mounting location of the device and the length of the pipe extension selected. The pipe extension is available in the following lengths: 500 mm, 1000 mm, 1500 mm, 20 inch, 40 inch, 60 inch. 3.3 Input Signal Probes covered => small amplitude Probe not covered => large amplitude 3.4 Measuring Frequency 700 to 800 Hz 8

9 Output 4 Output 4.1 Galvanic Isolation FEM22 (E5): between sensor and power supply FEM24 (WA): between sensor, power supply and load 4.2 Switch Behavior Binary 4.3 Power-on Behavior When switching on the power supply the output is set to "signal on alarm". After a maximum of 3 s it switches to the correct output signal. 4.4 Fail-Safe Mode Minimum/maximum quiescent current safety can be switched at electronic insert Max. = maximum safety: When the vibrating rod is covered, the output switches in the direction of the signal on alarm Used for overfill protection for example Min. = minimum safety: When the vibrating rod becomes exposed, the output switches in the direction of the signal on alarm Used for empty running protection for example 4.5 Switching Delay 0.5 s when the sensor is covered 1 s when the sensor is exposed 4.6 Ex Specifications FEM22 (E5), FEM24 (WA): Explosion protection for explosive dust-air mixtures: Dust-Ex, DIP 9

10 Connection 5 Connection 5.1 FEM22 (E5) Electronic Insert, DC PNP Power Supply DC voltage 10 V to 45 V Ripple max. 5 V, 0 to 400 Hz Current consumption max. 18 ma Power consumption max W Reverse polarity protection Separation voltage: 2.2 kv Overvoltage protection: overvoltage category III Electrical Connection Three-wire direct current connection Preferred in conjunction with programmable logic controllers (PLC), DI modules as per EN Positive signal at electronics switch output (PNP); Output blocked at level limit (+) F 0.5 A R e.g. Relay PLC L+ L U 10 V 45 V (DC) Figure

11 Connection Output Signal Safety connection Level Output signal LEDs green yellow I L = Load current (switched through) Max. L+ + I 1 L 3 < 100 µa = Residual current (blocked) < 100 µa 1 3 = Lit = Not lit Min. L+ I + 1 L 3 < 100 µa 1 3 Table Signal on Alarm Output signal on power failure or in the event of device failure: < 100 µa Connectable Load Load switched via transistor and separate PNP connection Load current: max. 45 V (cyclical overload and short-circuit protection), continuous max. 350 ma Residual current: < 100 µa (for blocked transistor) Capacitive load: max. 0.5 µf for 45 V, max. 1.0 µf for 24 V Residual voltage: < 3 V (for transistor switched through) 11

12 Connection 5.2 FEM24 (WA) Electronic Insert, AC/DC with Relay Output Power Supply Alternating voltage 19 V to 253 V, 50/60 Hz or DC voltage 19 V to 55 V Power consumption max. 1.3 W Reverse polarity protection Separation voltage: 2.2 kv Overvoltage protection: overvoltage category III Electrical Connection Universal current connection with relay output Power supply: Please note the different voltage ranges for AC and DC. Output: When connecting a device with high inductance, provide a spark arrester to protect the relay contact. A fine-wire fuse (depending on the load connected) protects the relay contact in the event of a short-circuit. Both relay contacts switch simultaneously. DPDT (double pole double throw) F 0.5 A * * When jumpered, the relay output works with NPN logic. ** See below "Connectable load" Note! L1 L+ N PE L (Ground) NO C a u ** NC r NO a C u ** NC r Please note the different voltage ranges for direct and alternating current. U ~ V (AC) Figure 5.2 U V (DC) 12

13 Connection Output Signal Safety = Relay energized connection = Relay de-energized Level Output signal LEDs green yellow = Lit = Not lit Max Min Signal on Alarm Table Output signal in event of power failure: relay de-energized Connectable Load Loads switched via 2 floating change-over contacts. I~ max. 6 A, U~ max. 253 V; P~ max VA, cos = 1, P~ max. 750 VA, cos > 0.7; I- max. 6 A to 30 V, I- max. 0.2 A to 125 V. The following applies when connecting a functional extra-low voltage circuit with double insulation as per IEC 1010: Sum of voltages of relay output and power supply max. 300 V 13

14 Operating Conditions 6 Operating Conditions 6.1 Installation Instructions Mounting location e. g. storage or buffer container Orientation * ** Figure 6.1 Horizontal installation/vertical installation * With protective cover (to be provided by customer) ** With protecting tube (to be provided by customer) 14

15 Environment 7 Environment 7.1 Ambient Temperature Range -40 to 70 C 7.2 Storage Temperature -40 to 85 C 7.3 Climate Class Climatic protection as per DIN IEC 68 Part 2-38, Fig. 2a 7.4 Degree of Protection IP66/IP67, NEMA 4X 7.5 Vibration Resistance DIN /IEC : shock 30 g; vibration 0.01 g 2 /Hz 7.6 Electrical Safety IEC 61010, CSA , FM Electromagnetic Compatibility Interference emission to EN 61326, Electrical Equipment Class B Interference immunity to EN 61326, Annex A (Industrial) 15

16 Process 8 Process 8.1 Ambient Temperature Permitted ambient temperature T amb at housing depending on the medium temperature T p in the container: T amb C T amb T p T p C 40 Figure 8.1 x C = (1.8 x + 32) F 8.2 Thermal Shock Resistance Maximum 120 K 8.3 Limiting Medium Pressure Range -1 to 25 bar Maximum Working Pressure (MWP) 25 bar Burst Pressure 100 bar 8.4 State of Aggregation Solids 8.5 Grain Size 25 mm 8.6 Bulk Density 200 g/l, not fluidized 16

17 Process 8.7 Lateral Load L F Maximum admissible lateral load F in N Figure mm = 3.94 inch Overall length L in mm 17

18 Mechanical Construction 9 Mechanical Construction Note! All dimensions in mm! (100 mm = 3.94 inch) 9.1 Design, Dimensions Compact Device LVL-B1 ø 85 max Figure 9.1 R1/ NPT 1¼ 50 AF R1½/ NPT1½ ø 29 ø AF/1¾ AF 18

19 Mechanical Construction Device with Pipe Extension LVL-B2 max. 65 max. 60 ø L Figure 9.2 L = 500 mm, 1000 mm, 1500 mm, 20 inch, 40 inch, 60 inch 9.2 Weight L AF/1¾AF R1/ NPT 1¼ R1½ / NPT1½ ø AF ø 16 LVL-B1/LVL-B2 with F16 housing (A6, A7, A8), FEM24 (WA) and R1 thread (R3): Sensor type Weight compact = approx. 1.0 kg 500 mm = approx. 1.3 kg 1000 mm = approx. 2.0 kg 1500 mm = approx. 2.6 kg Table

20 Mechanical Construction 9.3 Material F16 Housing (A6, A7, A8) PTB-FR, cover with sight glass made of PA12, EPDM cover seal F18 Housing (C2, Q3, P4) Aluminium EN-AC-AlSi10Mg, plastic-coated EPDM cover seal Process Connections R1, R1-1/2 (316L, DIN 2999) NPT1-1/4-11-1/2, NPT 1-1/2-11-1/2 (316L, ANSI B ) Sensor 316L 20

21 Human Interface 10 Human Interface 10.1 Display Elements Note! The switch settings in the following graphics are in the as-delivered state. FEM22 (E5) One green LED: operation One yellow LED: electronic switch closed U V DC I max : 350 ma L + L - FEM22 DC PNP 1 MA X MIN FEM24 (WA) Figure 10.1 One green LED: operation One yellow LED: contact closed (relay energized or fed with current) U ~ V DC V AC L1 N 35 4 MA X MIN FEM Figure Operating Elements of Electronic Inserts MAX MIN (factory setting) One switch for safety mode MAX Overfill protection MIN Dry running protection One switch for bulk density/density setting 400 g/l (high bulk density) 200 g/l (low bulk density) 21

22 Human Interface 10.3 Sediment Detection Detection of solids under water The system does not detect coverage by liquids similar to water. HO 2 Figure

23 Certificates and Approvals 11 Certificates and Approvals Note! The following documents are also available in the download area of the Pepperl+Fuchs web site: CE Mark, Declaration of Conformity The device is designed to meet state-of-the-art safety requirements, has been tested and left the factory in a condition in which it is safe to operate. The device complies with the applicable standards and regulations as listed in the EC declaration of conformity and thus complies with the statutory requirements of the EG directives. Pepperl+Fuchs confirms successful testing of the device by affixing to it the CE mark Ex Approval Your Pepperl+Fuchs sales centre can provide you with information on the Ex versions which can currently be delivered. All explosion protection data are given in a separate documentation (see "Documentation") which is available upon request Type of Protection See "Ordering information" as of page 24 and "Documentation" on page Standards and Guidelines Other standards and guidelines that were taken into consideration in designing and developing Vibracon LVL-B1, LVL-B2: Low Voltage Directive (2006/95/EC): EN :2010 (electronic insert FEM24 (WA)) Electromagnetic compatibility (2004/108/EC): EN :2006, EN :2006 ATEX Directive (94/9/EC): EN :2012, EN :2009 Degree of protection: IEC 60529:2001 Vibration resistance: EN Climate class: EN 60068, part 2-38, fig. 2a 23

24 Ordering Information 12 Ordering Information 12.1 Product Structure LVL-B1 Note! This overview does not mark options which are mutually exclusive. Option with * = on request/in preparation Device LVL Design B1 Vibration limit switch Compact device Process connection N3 Thread NPT1-1/4, ANSI, /316L N5 Thread NPT1-1/2, ANSI, /316L R3 Thread R1, DIN 2999, /316L R5 Thread R1-1/2, DIN 2999, /316L XX Special version Housing, cable entrance A6 Aluminium housing F18, IP66/IP67, NEMA 4X, cable gland M20 A7 Aluminium housing F18, IP66/IP67, NEMA 4X, thread NPT3/4 A8 Aluminium housing F18, IP66/IP67, NEMA 4X, thread G1/2 C2 Polyester housing F16, IP66/IP67, NEMA 4X, cable gland M20 Q3 Polyester housing F16, IP66/IP67, NEMA 4X, thread NPT1/2 P4 Polyester housing F16, IP66/IP67, NEMA 4X, thread G1/2A Electrical output E5 FEM22, 3-wire, PNP, 10 V DC V DC WA FEM24, relay, DPDT, 19 V AC V AC, 19 V DC V DC Additional equipment A Basic version Approval NA CU EX IK Version for non-hazardous area CSA General Purpose, CSA C US ATEX II 1/3D Ex ta/tc IIIC T170 C Da/Dc IECEx Ex ta/tc IIIC T170 C Da/Dc 24

25 Ordering Information 12.2 Product Structure LVL-B2 Note! This overview does not mark options which are mutually exclusive. Option with * = on request/in preparation Device LVL Design B2 Vibration limit switch Device with pipe extension Process connection N3 Thread NPT1-1/4, ANSI, /316L N5 Thread NPT1-1/2, ANSI, /316L R3 Thread R1, DIN 2999, /316L R5 Thread R1-1/2, DIN 2999, /316L XX Special version Sensor length mm mm mm 6 20 inch 7 40 inch 8 60 inch Housing, cable entrance A6 Aluminium housing F18, IP66/IP67, NEMA 4X, cable gland M20 A7 Aluminium housing F18, IP66/IP67, NEMA 4X, thread NPT3/4 A8 Aluminium housing F18, IP66/IP67, NEMA 4X, thread G1/2 C2 Polyester housing F16, IP66/IP67, NEMA 4X, cable gland M20 Q3 Polyester housing F16, IP66/IP67, NEMA 4X, thread NPT1/2 P4 Polyester housing F16, IP66/IP67, NEMA 4X, thread G1/2A Electrical output E5 FEM22, 3-wire, PNP, 10 V DC V DC WA FEM24, relay, DPDT, 19 V AC V AC, 19 V DC V DC Additional equipment A Basic version 25

26 Ordering Information Approval NA CU EX IK Version for non-hazardous area CSA General Purpose, CSA C US ATEX II 1/3D Ex ta/tc IIIC T170 C Da/Dc IECEx Ex ta/tc IIIC T170 C Da/Dc 26

27 Accessories 13 Accessories 13.1 Sliding Sleeves for Vibracon LVL-B2 Sliding sleeve for pressurized container R1-1/2, DIN 2999 Order designation: LVL-Z200 NPT1-1/2-11-1/2, ANSI B Order designation: LVL-Z201 Note! Ø70 M6 x 25/ AF5 Suitable for multiple switch-point configurations! ~70 AF60 Sliding sleeve for unpressurized container Figure 13.1 Degree of protection IP65 R1-1/2, DIN 2999 Order designation: LVL-Z202 NPT1-1/2-11-1/2, ANSI B Order designation: LVL-Z203 Note! Only suitable for one-time switch-point configuration! Figure Spare Parts FEM22 (E5) electronic insert FEM24 (WA) electronic insert Cover for polyester housing (F16), transparent plastic with seal Cover for aluminium housing (F18), aluminium with seal Cover for aluminium housing (F18), aluminium with glass insert and seal (not for Ex d) R1½ 1½-11½ NPT MWP = 25 bar (360 psi) T a = max. 150 C (max. 300 F) G1¼ AF50 M6 (3x) AF R1½ 1½-11½ NPT MWP = 0 bar (0 psi) T a = max. 150 C (max. 300 F) 27

28 Documentation 14 Documentation Note! The following document types are available in the download area of the Pepperl+Fuchs web site: Document type Technical information Brief instructions Instruction manuals Table 14.1 Document code TI00389O/98/EN KA00227O/98/A6 SI00300O/98/A3 (ATEX II 1/3D Ex ta/tc IIIC T170 C Da/Dc) SI00424O/98/EN (Ex ta/tc IIIC T170 C Da/Dc) 28

29 Notes 29

30 Notes 30

31 Notes 31

32 PROCESS AUTOMATION PROTECTING YOUR PROCESS Worldwide Headquarters Pepperl+Fuchs GmbH Mannheim Germany Tel TI00389O/98/EN/04.08 For the Pepperl+Fuchs representative closest to you check Subject to modifications Copyright PEPPERL+FUCHS Printed in Germany DOCT-0877C 01/2016